Computing recording-scale.



E. M. SCHANTZ.

COMPUTING RECORDING SCALE.

APPLICATION FILED MAR. 14, I916.

Patented Apr. 8,1919.

8 SHEETS.SHEET 1.

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COMDUTED PRICE EIEIEIE PRICE per LB.

(p in 1mm P0131 PW E. M. SCHANTZ. COMPUTING RECORDING SCALE.

APPLICATION FILED MAR.14 [9H5- 1,299,786, Y Patented Apr. 8,1919.

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COMPUTING RECORDING SCALE.

AF'PLjCATION FILED MAR. 14, I9l6.

Patented Apr. 8,1919.

8 SHEETS-SHEET 3- E.- M. SCHANTZ.

QOMPUTING RE C0-RD|NG SCALE. APPLICATION, FILED MALH, 1916.

1,299,786. v Patented Apr. 8,1919.

R SHEETS-SHEET 4.

9 now E. M. SCHANTZ.

COMPUTING RECORDING SCALE.

APPLICATION FILED MAR. l4, 19|6.

1,299,786. Patented Apia 8,1919.

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COMPUTING RECORDING SCALE.

APPLICATION FILED MAR.14,l9l6.

Patented Apr. 8,1919.

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E. M. SCHANTZ'.

commune RECORDING SCALE.

APPLICATION FILED MAR 14, l9l6.

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UNITED STATES PATENT OFFICE.

EDWIN M. SCHANTZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE COMPUTING SCALECOMPANY, OF DAYTON, OHIO, A CORPORATION OF OHIO.

COMPUTING RECORDING-SCALE.

Specification of Letters Patent.

Patented Apr. 8, 1919.

Application filed March 14, 1916. Serial No. 84,019.

To all whom it may concern:

Be it known that I, EDWIN M. SCHANTZ, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain'new and useful Improvements in Computing Recording-Scales, of which the following is a full, clear, and exact description.

This invention relates to certain new and useful improvements incomputing recording scales of the type shown and claimed generically inthe application of E. M. Schantz, Serial No. 695,879. The prinicpalobjects of. this invention are to improve the computing mechanism, toimprove and introduce additional safety and interlocking devicesintocertain portions of the electric control mechanism to improve thepilot mechanism, to improve the price setting devices and to improve thecontrolling devices.

In this application the computing, controlling and recording mechanism1s shown in operative association with the well known drum scale of thespring type and the arrangement is such that the computing and recordingdevices may be easily attached to the well known scales now on themarket. Further objects of this invention will be more fully pointed outhereafter.

In the drawings Figure 1 shows an assembly view of the scale, computing,recording devices and the motor to drive the computer and recorder.

Fig. 2 shows a diagrammatic View of the pilot and electrical controllingdevices.

Fig. 3 shows a detail assembly view of the computing and recordingmechanism.

Fig. 4 15 an end view of Fig. 3 looking from the right hand side.

Fig. 5 is a central sectional view'of the price setting devices, and theconnections to the price per pound lndicator.

Fig. 6 1s a detail v ew of the tens of cents drum and its connections toa rack used for positioning the computing bar.

Fig. 7 is a developed view showing the as sociation of driving gearingbetween the different price per pound setting devices.

Fig. 8 is an enlarged detail View of the controlling keys and otherparts shown in Fig. 4.

Figs. 9 and 10' are detail views showing the computing bar in twopositions.

Fig.'11 is a sectional detail view of Fig. 5 taken on line 11-11 andlooking in'the direction of the arrow.

Fig. 12 is a detail sectional view taken on line 12-12 of Fig. 11 andlooking toward the right.

Fig. 13 is a detail sectional View of Fig. 5 taken on line 13 andlooking in the direction of the arrow.

Figs. 14: and 15 are detail .enlarged views of the transferringmechanism for the computedcost indicators.

Figs. 16 and 17 show detail recording mechanism.

In Fig. 1, 20 represents a scale pan which,- through suitable levermechanism, positions an indicating drum 21 to varyingpositions dependentupon the weight upon the pan 2D. The drum is turned by means of a rack22 and the rack is restrained against movement by a spring 23. Theseparts are well known in computing scales'and need not be described indetail. It will be understood that at the opposite side of the scale theindicating drum is visible to the customers, who can see thereon theweight and computed cost of the article being weighed upon the scale.The lower end of the rack is exviews of the which mesh with a pinion 24.This pinion is carried on a shaft 25 of the index or pilot mechanism. Itwill be understood that the shaft 25 will take varying angular positionsdependent upon the weight on the scale latform and that these'positionswill con orm in relative angular position to the position of the scaledrum 21.

Inasmuch as articles or goods to be weighed, placed on the scale-pan 20,cause the latter to descend, and the other scale parts, such as the rack22, to be actuated, until a condition of equilibrium is established, thescale can be aptly termed an equilibrium machine.

Pilot mechanism.

of the prior Schantz application above re- '.ferred to. It comprises aninsulating disk pieces which when the scale is in equilibrium makecontact with the sides of a 'contact piece which is carried by index 32.The:

index 32 is carried'on the end of shaft 25 driven by pinion 24 and rack22, which shaft.

' is revoluble .in a standard and to a certain extent in disk 26. Therelative rotation of shaft 25 and disk 26 is limited by stops S, whichprevent excessive distortion of contact springs 28,29, 30 and 31-. Thearrangement is suchsthat when the index 32 swings in a clockwisedirection it breaks the contact be tween it and the blade 28. Thiscauses a motor to turn which turns a gear 35 which turns the spur gear27 and thereby rotates the insulating disk 26. The insulating diskcarries both contacts 28 and 29 around with it until 28 catches up with32 and 32 no longer bears excessivelyagainst 29. The arrangement is suchthat when the index 32 Swings in the opposite direction the motor isrevolved in the opposite direction and in this manner the insulatingdisk 26is rotated counterclockwise until 29 catches up with the index32. The motor then stops. The circuit connections which efl'ect theseresults will be presently described.

The previously mentioned spring blades 30 and 31 are providedwithpointed con-- tacts which when the index 32 is in mid position 71.c. with the scale in equilibrium either loaded or unloaded areadapted'to contact with one another. An extension of the index carriesadjustable insulated, blocks 36 and 37, which when the index 33 movesfrom central position, are adapted to contact against one or the otherof the blades 30 and 31 and break their contact. This will interrupt acircuit which will be hereafter traced and explained. I

Electrical controlling devices.

When there is no load upon the scale at all, it is desirable that allcurrent be shut off. For this purpose a current interrupter is provided.This interrupter .15 shown in Figs. 1 and 2 at 40 and consists of apivoted member which is normally held from engagement with. contact 41by an abutment 42, which is carried on rack 22 or-on any other movingpart of the scale. rangement is such that when the rack is in normalposition with no load on the scale the abutment 42 lifts the pivotedmember and breaks contact 42 but immediately a load is placed on thescale the abutment moves down and lets the pivoted member The armake acontact. One side of the current interrupter is connected to'a source ofelectric power as for example the battery 43. The other .side )of thecontact device connects through a wire 44 and by a brush 45 or anysuitable means to shaft 25 and through the latter to index 32.

Assuming a load is placed upon the scale;

index 32, turning clockwise as viewed in Fig. 2, breaks contact with 28and remains in contact with 29. This completes a circuit traced asfollows: From'battery 43 to current 'interruptor 40, wire 44, index 32,blade- 29, then through wire 60, magnet 61, wire 62 magnet 63 andthrough w1re 64 'back to battery.

The energizing of magnet 63 closes the following circuit: Frombattery43, to interrupter'40, wire 44, wires 65, 66, armature 67 (closedas shown in Fig. 2), wire 68,"

armature 69, (now closed by the energized relaymagnet 63) Wire70,'magnet 71, w1re 72, and back through wire 64 to battery.

The energizing of magnet 71 swings the pivoted switch arm 74 to theright or clockwise. This switch arm is'normally held in neutral positionby springs 75. The switch arm then closes the following circuit. Frombattery 43, to interrupter 40, wire65, field coils 76 of motor M, wire77, switch blade 78, contact 79, wire 80, armature 81, thence throughwires 82, 83, contact 84, blade 85, and wires 72, and 64 back tobattery. The current now flowing in this circuit serves to rotate themotor M in a forward direction, thereby rotatingpinion 35 which rotatesgear 27 and disk 26 (Fig. 2, at the top) in the clockwise direction.

, Contact blade 28, mounted on the disk, is thus moved up to (orovertakes) the index 32 which, it will be remembered, was given by themovement of the scale-pan a sufiicient initial clockwise rotation,relative to thedisk 26, to break the connection with contact spring 28.The rota-tion of disk 26 by thepinion 35 therefore re-makes theconnection mentioned. At the same time the described movement of thedisk also carries contact spring 29 in the clockwise direction throughan angle equal to that traversed by the index 32 in its aforesaidinitial movement. The contact springs 28 and 29 are thus both restoredto their initial position relative to the index, with both their contactpoints engag- From battery (now closed) thence through wire 160, magnet161, wire 162, relay magnet 163, wire 166, wire 64 back to battery.

The energizing of magnet 163 then closes the following circuit: Frombattery 43' through interrupter,.40, wires 44, 65, 66,-armature 167 (nowclosed as shown, magnet 63 being denergized), wire 168, armature 169(now closed, magnet 163 being energized) through wire 170, magnet 1 71and back through wires 72 and 64 to battery.

The energization of magnet 171 throws the reversing switch 74 to reverseposition (that is, springs 75. This closes a circuit as follows: 43through interrupter 40, wires 44, 65, field coils 76 of motor M in thesame direction as heretofore, wire 77, blade 78, contact 184, wire 82through armature 81 in the reverse direction, thence through Wire 80,contact 79, blade 85, wires 86, 72 and 64 and-back to battery. Theeffect is to drive the motor M in the reverse direction and to drive theinsulating disk 26 in the reverse direction, that is, counterclockwiseas viewed in Fig. 2.

Assume now that the scale has come to rest with a load on the pan,contacts 28 and 29 are now both in contact with index 32 and current ison since interrupter 40 is closed. The motor will now remain stationaryand no current will flow in the motor.

circuit. This feature is important since it prevents the motor fromburning out. In addition the present embodiment prevents undue sparkingbetween points of blades 28, 29 and index or pilot 32 since thesecontacts do not carry the full current necessary to drive the motor butonly the current to operate the relay magnets. Assume 32 in contact withboth 28 and 29. Now current will flow through both contacts 28 and 29passing concurrently through wires 157, 160, 162, magnet 163, wire 166,and wire 64 to battery and also'through wires 60, 62, magnet 63, wire 64to battery. Consequently both magnets 63 and 163 will be energized. Nocurrent will flow to either magnet 71 or 171 since circuit. 168 will bebroken by reason of armature 167 being to the right against magnet 63'and no current will flow to magnet 71 since circuit 68 is broken byarmature 67 being to the left against magnet 163. Therefore, the switch74 will be held in neutral mid position by the springs 75 and no currentwill flow to motor M.

It has been found in practice that the motor M has a t'endencyto rockfirst in one direction and then in the other when the scale is inequilibrium. The reason for this is the inertia of the parts which themotor drives. It is therefore desirable to disconnect the motor from thedrive shaft when the scale is in position of equilibrium with a loadthereon. The drive shaft 90,

counterclockwise) against action of which leads from the motor to thecomputing and other mechanism is provided with a jaw clutch 91, a clutchmember 92 is splined to the shaft 93 and this clutch member is arrangedto be withdrawn when a magnet 94 is energized. This magnet is connectedto wire 72 leading through wire 64 to the battery is a wire of thisrelay 96 and with the contact ofrelay 98 which in turn connects withwire 44 leading to the other side of the battery. When the index orpilot 32 is in neutral position, (and the scale loaded, so that currentcan flow through the interrupter 40), both magand also leading frommagnet 94 nets 161 and 61 are energized and current flows to the magnet94 and disconnects shafts 90 and 93. However, when the index is not inequilibrium either magnet 61 or 161 will be denergized, thus breakingthe circuit and allowingthe shafts 90 and 93 to be clutched together.This device effectually prevents the hunting or rocking of the mechanismby Printing control.

After the computation has been carried out the printing of the amount,weight, price per pound, etc., isefiected. To carry out the actualprinting the motor M is employed.- It is necessary that the printing beso controlled that false printing cannot be effected.

First: Printing should be prevented when there is no load at all on thescale.

Second: Printing must not take place until the computing operation iscomplete.

Third: Printing must not take place until the scale is in equilibriumwith the load thereon.

Fourth: When printing is being done means should be provided forpreventing the reverse rotation of the motor and the motor should alsobe set into motion in a forward direction. 1

To accomplish the above results certain electrical controlling featuresare provided. These devices will now be described.

.Connected with wire 44 which leads to the interrupter 40 is a wire 100which leads to blade31. A wire 101 leads from blade 30 to magnet 102from which wire 103 leads through a circuit interrupter which will behereafter explained. From this interrupter a wire 103 leads to wire166,'which leads by way of wire 64 back to the opposite side of thebattery 43. Pivoted adjacent. to magnet 102 is a latch 104 which isnormally 95 which connects with the contact held away therefrom by aspring. This latch in its normal position enga es under and prevents thedepression of a pivoted plate or bar 105., This plate lies under certainkeys 270, Fig. 8, which will be more clearly described hereafter. And itwill be seen that since the keys when depressed contact against the topof the plate it will be impossi le to depress the keys until the latch104 is withdrawn from engagement with the plate. Now tracing thecircuits when there Is no load upon the scale: Circuit interrupter 40will be open as shown in Fig. 2, consequent-1y no current can flow fromthe battery through wires 44, 100, blades 31, 30, wire 101 to magnet 102and consequently the-latch 104 is in the position shown and and 31.

thus efl'ectually prevents the depression of the keys and the carryingout of the printing operation.

Second: tracing circuit connections when the computing operation isincomplete, the index 32 will be moved from its central position therebythrough insulated abutment 36 or 37 breaking the contact between bladesTherefore no current can flow to magnet 102 and consequently the keyscannot be depressed, nor can printing be carried out when the computingoperation is incomplete. The same breaking of the contacts 30, 31 occurswhen the scale is not in exact equilibrium.

In order to turn the motor forward to do ployed. The former is carriedon an insulating block on plate 105. Consider the scale in equilibriumand current flowing through magnet 102, latch 104 is disengage fromplate 105 and consequently the depression of one of the aforesaid keyswill depress plate 105 and break contacts 158 and 15.9. Breaking ofthese contacts interrupts the current flowing from blade 28 to w1re 157,etc., therefore deenergizing magnet 163 and breaking the circuit tomagnet 171,

whereby reverse rotation of motor M is prevented. At the same time,current continues .to flow from blade 29 to magnet 63 and this iseffective through the relays previously explained to supply current tomotor M to drive it in a forward direction.

Price setting mechanism.

In this apparatus, the operator manually sets up the price per pound oncertain setting devices. These devices manually set up the priceper'pound on certain price per pound indicators and at the same time thesame setting is made upon price per pound type carriers. The pricesetting devices are also adapted to position a computing bar to aposition according to the price per pound. These price setting deviceswill now be described together with their connections to the computingbar.

In Fig. 1, 110 is the fractions of cents lever, 111 is the units ofcents setting lever,

and 112 is the tens of cents setting lever."

by the operator. The pinch members and setting levers will be hereaftertermed pinch handle levers. j

Drum 113 i. e. the fractions of cents drum is rigidly held in positionby a bracket 116.

(Fig. 7) on the machine frame. A screw and slot adjustment on thebracket is provided for slightly varying the position of this drum.

Referrin now to Figs. '7 and 5, the drums 114 and 115 and the threepinch handle levers are revolubly mounted on a shaft 113 carried inbrackets in the frame. Pinch handle lever110 is provided with a gearsegment 117 which meshes with a gear 118 which gear is revolubly mountedin a bracket on the frame, Fig. 5. Gear 118 has secured to it a smallerpinion 119,'which in turn meshes with a gear 120 which is keyed orotherwise secured to drum 114. Pinch handle lever 111 carries a similarsegment 121 meshing with gear 122 which through gears 123 and 124 turnsdrum 115. Pinch.

handle lever 112 carries 'a large segment 125 which meshes with a'rack126, which sets the computing bar. The above described gear train hasthe following operations:

etting; pinch handle lever 110 to a certain fraction turns drum 114 to avery slight extent which is proportional to the rotation between thesetting levers 110 and 111. The movement of pinch handle lever 111 inturn turns'drum 115 to a certain proportional extent. However, thearrangement of the gear train will permit any of the higher order oflevers belng moved without moving the drums of lower order. This isnecessary to effect a proper indication and also to cause the rack 126to be lifted when one of the higher order of levers is adjusted.

The operation of the various pinch handle with its drum, the pinch lever111 will be -provides means whereby the computer whereby the setting ofdrawn forward upon the movement of inch lever 110. This movement in turnwi 1 advance the pinch lever 112 a proportionate extent and so lift therack. It Wlll be seen that the above construction provides means wherebythe setting of any pinch handle lever imparts motion to the pinch handlelever of next higher order, but no motion is imparted from plnch handlelevers of to those of lower order.

Connections to computing bar.

a vertical bar 132. The block 131, adjacent I to its lower end hasswiveled thereto a second block 133. The face of the latter block isT-slotted and thereby provided with over.- hanging guide portions whichengage cooperating uide portions on the computing bar 134. he. computingbar in turn is swiveled at 135 to a is connected to vertical bar 132 anda second vertical bar 137.

Vertical bars 132, 137 and blocks 136 and 138 fit closely within theupper and lower parts of the machine frame and are also guided betweenthe front straps 139 and the back of the frame in such a manner thatthey can freely slide as a unit to the right and left in the frame. Theabove construction ar 134 can be set to varying angular positions by theprice setting devices and thereafter the angularity can be maintained asthe computer bar. is slid to the right and left in unison with block136.

Price per pownd indicators and connections to price per pound settingdevices.

In this machine means are provided. the price per pound setting device,i. 6., pinch handle levers 110, 111, 112 is eflective to position rotaryindicators to boldly display the price per pound.

Referring to Figs. 5, 6, 7 and 3 the pinch handle levers carry gear and129. These segments mesh with pinions 140, 141, 142. Pinion 142 ispinned to a shaft 143 which is revoluble in the machine frame. Pinion141 is secured to sleeve 144 revoluble about shaft 143, and pinion 140is secured to sleeve 145 rotatable on sleeve 144. Shaft 143, sleeve 144,and sleeve 145, carry gears 146, 147 and" 148, respectively, whichthrough similar pinions and sleeves drive the two-toothed drivingmembers 149 and 150 and 151. One of these higherorders These indicatorsare block 136, which block and its driving gear 27,

stood, has a degree segments 127, 128

two-toothed driving members is shown in Fig. 13. These driving membersare adapted upon-their rotation to mesh with and drive gears 152, 153and.154 which are rigidly secured to price per pound indicators 200,

201, 202, which-indicators correspond with-tens, units and fractions ofcents of the prices per pound to be indicated. freely rotatable upon ashaft carried in the machine frame as shown in Fig. 5. The toothedarrange ment shown in Fig.13 permits the slight increment of movement ofthe higher order of pinch levers which is imparted thereto by the lowerorder of levers to take lace without immediately varying the higherorder price per pound indicators. The

toothed arrangement also correctly positions the indicator to correspondwith any price per poundwhich is set by the setting levers 110, 111 and112. P

Oomputiag bar driving connections.

As previously explained the. motor M is controlled by the index or pilotmechanism and eleotricalcontrolling devices to turn a revolutionsdepending upon the load upon the scale pan. The connection 'between themotor M and the index insulating disk 26 is through the bevel gears(shown in Fig. 1) and shafts 90 clutch 91, 92 (shown in Fig. 2) andshaft 93. The shaft 93 has splined thereon ber 199, which when weighingis being carried outis in the position shown in Fig. 8. In this figurethe clutch member is shown clutched to a worm 203 which is freelyrotatable on shaft 93. This is the position of parts during the weighingoperation and the clutch member 199 is disengaged from worm 203 for apurpose and by means which will be hereafter described.

The worm 203 meshes with a gear 204 which is secured to the end of across shaft 205. The latter cross shaft 205 is the shaft therebycontrols the extent of rotation of The shaft 205, it will be underofrotation which is-direotly proportional to the load on the scale pan.This shaft is therefore employed for driving the computing bar andpositioning it to a variable position relatively to the machine frame.For this purpose the shaft 205 carries a worm 206 which extends throughan internally threaded extension 207 of block 136 (see Figs. 11 and 12).'It will therefore be seen that the shaft 205 on rotating will positionthe computer bar in varylng positions with respect to the sides of theframe and these positions Will 001- the motor.

given number of revolutions or fractions ofa clutch mem respond with andbe directly; proportional to the weight upon the scale.-

Fig. 5 shows the computer bar 134 in nor-' 1 mal position, that is, inthe position (at the I left) which it assumes when there is no load uponthe scale.

Fig. 9 shows tion with-no load on the scale and wit an u wardinclination. This is the position w ich the computer bar assumes when ithas been set by the pinch handle levers'110', 111 or 112 to correspondto a certain price per ound. I 4

Fig. 10 shows the computer bar, in inclined position and slid to theright by the rotation of shaft 205,.and' worm 206, this being theposition it assumes during or after a computing operation when there isa load on the scale.

. Connections from computer bar to computed cost indicators,

Y As shown in. Figs. 9, '10 and 11, the computer bar has a central slot210. 'Engaged secured in the machine frame and to which pinion issecured a sleeve 216 which is revoluble about said shaft. carries ,agear. 217 which through a train of gearing 218, 219, 220, 221, 222 and223,

finally drives a pinion 224 which is attached to a sleeve 225 whichcarries the units com uted cost indicator 226. From the units indicatorthe amounts are transferred by step by step transfer devices'which areshown in more detail in Figs. 14 and 15-. In this: figurethe unitsindicator is shown at226, thedimes at 227,. the units of dollars at 228and the tens of dollar at 229. These indicators have secured thereto,gears 230, 231, 232, which mesh. with and drive transfer devicescomprisi-n 233, 234, 235. It will be understood that" fie single toothis adapted. to mesh with. a. tens toothed gear on the. higher order.indicator and" turn the indi-- cator one step uponv one completerevolution of the lower order indicator. This is shown in Fig. 15, inwhich 236 shows the onetoothed wheel and 237 shows any one of theten-toothed gear wheels. It is to be understood that there is one ofsuch gears 237 attached to each of the indicators 227, 228 and It willbe understood that when the computer bar 134 is inclined (see Figs. 9and 10) and is drawn to the right, the rack 213 will be elevated andthat when the computer bar is moved to the left the rack 213 will be lered, T ro gh the onn cti s a i g the computing bar in osithat the pricelevers may be set either or after the weightis placed upon the scale,

The sleeve 216 geared to the price per the computed cost will be set upupon the indicators upon the lifting of thev rack, and upon thelowering-ofthe rack theindicators will return tozero position, It willbe clear that if there is a weight on-the scale and thev computation fora given price has. been completed and thereafterthe price-setting leversare moved, the bar will also be..c anged and the rice upon osition ofthe-computingthe computed'cost indicatorswil be correspondinglychanged.From this ita pears fore but it is preferable to make the setting firstso thatthe motor ower is utilized to set the computed cost indicators.

Weight indicators and dflotng connections therefor.

'As previously explained, shaft 205, is given a degree of rotationproportional to the weight on the scale. 'The gear 35 is secured to.the'shaft and this gear through .245 and a one-toothed transfer wheel246 in devices for the weight and computed cost indicators is employedas a support for the intermediate gearing to type wheels. This' gearingis clearly shown in Fig. 3 and need not be described in detail. It issufiicient to state that gears 250 and '251 correspond and are gearedtothe pound and ounce indicators 243 and 242, gears 252, 253, and 254are pound indicators 200, 201, 202, and gears 255, 256, 257 and 258 aregeared to the computed cost indicators 229, 228, 227 and 226. Gears 250,251, 252, 253, 254, 255, 256, 257, and 258 are secured to shaft 259 andto a series of nested sleeves which are freely rotatable about saidshaft and. about each other. These nested sleeves carry type wheels.weight wheels for ounds and ounces. Wheels 261 are the price per poundwheels,

and 262 are the computed cost wheels. All

of these wheels carry a double set of type so that a duplicate recordcan be taken from the top and bottom of the wheels.

There is also provided a single type wheel 263 which is adapted to printthe initial of the clerk making the transaction. This type -wheel 263 isset through a similar sleeve and gearing from the clerks indicator 264which is positioned in a manner to be hereafter described. All of. thetype wheels are ill- GlOSQd in a housing 265 shown n Figs. 3

Wheels 260 are the ries a pm 277. Upon of the price setting leversdicators may also be moved and 4. It will be understood that the weighttype wheels 260 will be positioned by the motor M, the price per poundwheels 261 will be positioned directly by the movement 210, 211'and 212and that the computed cost wheels are positioned by the movement of thecomputing bar 134, which bar is moved by the motor M to an extentproportional to the load upon the scale. As previously explained theseinby the price setting levers.

In order to drive certain mechanisms which effect the actual printingincluding the feeding of paper and the severing of the printed check themotor M is utilized. To

' connect the printing devices with the motor certain keys are utihzedwhich are also.

adapted to set up the initial of the clerk on the clerks indicator 264and upon the cor-.

res onding type wheel 263.

eferring to Fig. 8, 270 are three clerks keys suitably lettered as withcharacters A, B, C. These keys are slidably mounted in a frame member271 and are normally held outwardly by springs. The lower ends of thekeys are adapted to impact against a plate 105 (previously referred to)which plate is pivoted at 272. This plate is normally held againstmovement bythe spring pressed latch 104 which latch is only withdrawn bymagnet102, when the loaded scale is inequilibrium and the computingoperation completed. It therefore follows that it is impossible tocomple-telydepress keys 27 0 until the scale is in equilibrium and thecomputing operation completed. When latch 104 is withdrawn fromengagement the depression of the keys will rock the plate 105 downwardlyand break contacts 158, 159. This starts the motor in the forwarddirection and rotates shaft 93, as already described. The rocking ofplate 105 swings an arm 273 upwardly. This arm engages the clutch member199 and lifts it from engagement with worm 203 and into engagement witha worm 274 which worm is freely rotatable on shaft 93. The worm 274;after being clutched to clutch member 199, rotates in unison with shaft93 and drives a ear 275 with which it is intermeshed.

late' 105 has a second arm 276, which carthe rocking of plate 105 andthe starting of the motor, the pin 277 is engaged within a box cam 278and held there until the gear 275 has made one complete revolution. Aswitch member 279 aided by a spring 280 then restores the plate 105 tothe position shown thereby lowering the clutch member 199 anddisconnecting worm 274 from shaft 93. The restoration of plate 105 tonormal position restores the contact between 158 and 159 and stops therotation of the motor M. The keys 270 are also utilized to Set a clerksindicator 264.

of notches 284 thereon.

fact that the clerks indicator does not stay ting leversare being moved)the 1 adapted to print pivoted segment lever 282 normally held in theposition shown '(inFig. 8) by a spring.

When one of the keys 270 is depressed a shoulder on the key contactswith the horizontal lower portion of the segment lever 282 and rocks it.The extent of the'rocking will vary for different keys since the keyscontact with the lever at varying distancesfrom the pivot of the lever.In this manner a differential setting of indicator 264 is made dependingon whichkey is depressed. In order to maintain the clerks indicator inposition after it is once set the segment is provided with a springlatch 283 which has a number On an extending portion of latch 104 is asharpened pin 285 which when the magnet 102 is energized is adapted toenter one of the notches 284 and maintain the segment lever 282 in theposition to which it has been set by a key. However as soon as magnet102 becomes deiinergiz'ed the pin 285 will be swung back to the positionshown and the segment lever will be restored to normal position by itsspring. The above construction prevents printing being effected untilthe scale is in equilibrium and the computing operation com- 95 pleted.If the operator shouldattempt to press keys 270 too soon he will beapprised of his error by the fact that he cannot punch the key all theway down and alsofby the in its set position but returns to zero. Hemust then wait until conditions are correct for the printing operation.It may also be desirable to prevent the printing during the movement ofthe price setting levers. This would be accomplished by placing acircuit interrupter in the circuit leading to magnet 102 which wouldinterrupt the flow of current to magnet 102 during the movement of thesetting levers 110, 111, and 112. This may be accomplished by providinga lever 287 over the gear wheel 258, see Figs. '2 and This lever isprovided with a lug 288 which registers with the depressions between thegear teeth of 258. \Vhen 258 is rotating 1 (which is the. condition whenthe price setcircuit will be broken at contacts 289 and 290 and thecircuit to magnet 102 will be interrupted and the operation of printingprevented.

The printing device in this machin is a detail strip of all the itemsand a check which is to be given to the customer.

Check waiting and feeding mechanism.

The check paper is carried on a supply roll 291 Fig. 1. The paper tape292 passes through check feeding rolls 293-294. These rolls are gearedtogether and are driven by an intermittent gear 295 which is turnedthrou h the gear train shown in Figs. 4, 16 and 1 and upon the rotationof gear 275. The upper of these rolls 294 carries a printing plate 296which is inked from ink roll 297. This printing plate is adapted toprint on the check the merchants advertisement or any other printedmatter. The check strip 292 is fed forward under the type wheels one ofwhich is shown at 260, Fig. 17. The check finally extends outside thefront of the case where it may be grasped by the operator. During thesetting of thetype carriers they are inked by spring pressed ink rolls298. To imprint the amount upon the check, a platen 300 is employed. Theplaten is carried by a pivoted bar 301 and is forced into engagementwith the type by means of a cam 302. This cam is turned by a gear trainwhich connects with the gear 275, see Figs. 4, 14, 16 and 17. Themovement of the platen carrying bar is also utilized to operate apivoted knife and sever the check from the check strip. This knifecomprises a stationary blade 303 and a pivoted swinging blade -1 whichis normally held away from the stationary blade by spring 305, so

' that the check strip 292 can pass between. A

therewith the check is severed from the strip.

in 306 extends from the platen bar 301 and 18 adapted upon the upwardmovement of this bar tov raise the pivoted blade 304 and sever thecheck. It will be understood that when the printing is being effectedthe first movement of the gear 275 advances the check through theprinting device. Thereafter the platen contacts against the check andimprints the amounts thereon and concurrently Detail strip pm'ntz'ngdevices:

The detail strip 310 is passed from supply roll 311 under a guide rodand thence under impression platen 312 which platen is carried by lever313 which is pivoted in the frame and the printer housing. After passingunder platen 312 the detail strip is wound upon take up roll 314 whichroll is provided with a ratchet disk 315. A bell crank 316 is pivotedupon the shaft 317 which carries the take up roll and this bell crank isprovided with afeed pawl 318. A spring 319 rocks the bell crank in aclockwise direction and presses its end downwardly upon a block 320which is carried by one of the levers 313. An extension of this block320 carries a downwardly extending pin 321 which pin rides upon theperiphery of an involute cam 322. This cam is provided with four notchestwo being deep and two shallow. A car 323 is secured to the cam andmeshes with the-gear which rotates cam 302. Upon the rotation of thegear train, driven by gear 275 and shown in Figs. 4, 8 and 17, the pin321 will be lifted,

thus rocking bell crank 316 and by means of 'the pawl and ratchet thepaper will be fed onto the take roll 314. Thereafter the pin 321 dropsinto the shallow notch of the cam and pulls a certain amount of pa erfrom the supply roll 311, the take-up r0 1 214 being held againstreverse or unwinding rotation .by the holdin pawl 315 engaging ratchet315. When t e cam 322 rotates further so that the pin 321 drops into thedeep notch the platen 312 will be brought forcibly into contact with thetype there ing on the detail strip a record whic is a y im ressduplicateof the amounts and characters 1. In a device of the classdescribed, in Icombination, a scale, devices to be posit1oned.1n accordance with theposition of the scale, an index positioned by the movement of the scaleto varying positions, a 7

motor for moving the aforesaid devices, a

motor circui-t,'a controlling circuit having a pair of contact memberstherein establishing a normally closed circuit through said index, meansoperable upon the movement of the index for breaking said controllingcircuit, and means for thereby closing the motor circuit, whereby themotor drives the aforesaid devices in accordance with the displacementof the scale. 1

.2. In a device of the class described, in

combination, a scale, devices to be positioned in accordance with theposition of the scale, a motor for driving the same, a motorcircuittheref-or, an index positioned to varying angular positions bythe movement of the scale, contactdevices associated with said index andestablishing a closedcircuit when said scale is in equilibrium, andmeans operable upon the movementof said index for opening said circuitand for thereby closing the motor circuit, whereby the motor drives thedevices to an extent proportional; to the angular movement of the index.

3. In a device of the class described, in,

combination, a scale, a device to be positioned in accordance with theposition of the scale, a motor associated therewith, a motor circuit, anindex positioned by the scale. a. controlling circuit having contactdevices in operative association with said index, saidi devices beingadapted upon the -movement of the index away from one device to soaffect the controlllng circuit as to establish the motor circuit tocause the motor to be dr ven 1n one direction, sald dci. In a device ofthe class described, in

i at

-3 vices being adapted u onthe movement of the index in the oppositedirection to so reverse the motor circuit as to cause the motor to bedriven in the opposite direction.

combination, a scale, a computing machine, an index positioned by saidscale. to varying angular positions, computing machine in accordancewith the displacement of said scale, means for maintaining the motorinactive when the scale is in equilibrium and means rable upon themovement of the index li ir breaking one circuit and thereby closinganother circuit to the motor whereby said motor turns in a directioncorresponding to said index.

In a device of the class described, a scale, mechanism to be driven inaccordance with the displacement of said scale, an index positioned bythe scale, a follow up mechanism having contact devices thereon whichwhen the scale is in equilibrium establish a closed circuit through said'index, a motor for driving the aforesaid mechanism in accordancewith'the displacement of the scale, a power circuit therefor and relayscontrolled by the opening and closing of clrcuit through the aforesaidcontacts and index,'for closing and opening said power circuit to themotor and thereby operating the motor in accordance with thedisplacement of the scale.

6. In a device of class described, in combination, a scale, mechanism tobe driven in accordance with the displacement of the scale, an indexpositioned by the scale, a follow up mechanism having contact devicesassociated therewith which establish closed circuits through said indexwhen the scale is in equilibrium and open said circuits when the scalemoves from equilibrium, a. motor for driving the aforesaid mechanism, apower circuit therefor and electrical relay devices controlled by saidmotor for interrupting said power circuit to said motor when bothcontacts establish a circuit through the index and for closing andcontrolling the flow of current to the motor when one of said contactsis out of contact with the index, and thereby controlling the directionand extent of rotation of said motor. V

7. In a device of the class described, an equilibrium machine, an indexpositioned thereby to varying angular positions upon a load being placedupon the equilibrium machine, a computing machine, a means for drivingthe ance with the displacementof the equilibrium machine, said meanscomprising, :a motor and electrical control devices, said .electricalcontrol devices being adapted to open the motor circuit when saidequilibrium machine is in position of equilibrium a motor to drive theequilibrium computing machine in accordand to close circuits to saidmotor when the scale moves from a position of equilibrium. 8. In adevice of the class described, in combination, an equilibrium machine, a

computing device, means for applying an" auxiliary source of power todrive the computing device in accordance with the displacement of theequilibrium machine,

means for preventing the application of said power when the equilibriummachine is in the no load position of equilibrium, and an auxiliarymeans for mechanically disconnecting the auxiliary source of power whenthe equilibrium machine is in load position of equilibrium;

9. In a device of the class described, an equilibrium machine, acomputing device,

means for applying an auxiliary source of power to drive the computingdevice in accordance with the equilibrium machine, controlling means forsaid auxiliary powerjapplying means, adapted to prevent the applicationof said power when the equilibrium machine is in either loaded orunloaded position of equilibrium, an auxiliary control adapted upon theequilibrium machine attaining a position of equilibrium with a loadthereon to mechanically disconnect the power supplying means and thecomputing device.

10. In a device'of the class described, an equilibrium machine adaptedto move to a variable position of equilibrium in accordance withvariable load thereon, a computfor applying. an auxiliary source ofpower to drive the computing machine and position elements of therecording'machine in accordance with the variable displacement of theequilibrium machine, and means for preventing the operation of therecording machine except when the equilibrium machine is in position ofequilibrium. 11. In a device of the class described, an equilibriummachine, a computing device and a recording machine, means to apply anauxiliary source of power to drive the computing device and to positionelements of the recording device in accordance with the displacement ofthe equilibrium machine, means for preventing the operation of therecording machine until the equilibrium machine is in position ofequilibrium with a load thereon, and means operable upon the for drivingthe recording machine by the auxiliary source of power.

12. In a device of the class described, an equilibrium machine, acomputin -machine and a recording machine, means $0 r p ying anauxiliary source of power to drive said controlling means being mgmachine and a recording machine, means i recording machine when thescale is in noand means for preventing the operation of the recordingmachine cording machine in accordance with the computing machine, meansfor preventing the operation of the recording machine unt l therecording machine is in position of equilibrium with a load thereon andmeans for driving'the recording machine in a forward direction when saidequilibrium machineis in said position of. loaded equilibrium. 13. In adevice of the class described, in combination, an equilibrium machine, acomputing machine, means for applying an auxiliary source of power todrive the computing machine in accordance with the equilibrium machine,controlling devices for i so said power applying means to discontinuethe application of said power when the equilibrium machine is inposition of loaded equilibrium and to prevent the application of powerWhen the equilibrium machine is in no load equilibrium, means forpositioning elements of the recording machine in accordance with 'thedisplacement of the'equilibrium machine and the computing machine, meansfor preventing the operation of the recording machineyunti l theequilibrium machine is in position of loaded equilibrium, and means forthereafter driving the recording machine by the auxiliary source ofpower.

14-. In a device of the class described, in combination, an equilibriummachine, a com- I puting machine, means for positioning ele ments insaid computing machine in accordance with the P1106 per pound, means fordriving the computing machine in accordance with the displacement of theequilibrium .machine, a recording machine,

a means to operate means for positioning elements therein in accordancewith the computing machine and the equilibrium machine, means forpreventing the operation 'of the recording machine during thepositioning of the price per pound setting elements, means forpreventing the operation of the recording machine until the equilibriummachine is in position of loaded equilibrium and means for thereafterdriving the recording machine by the auxiliary source of power. 7 v

15. In a device of the class described, a scale, a computing machine, arecording machine, means for operating the computing machineto carry therecording machine to means for preventing the computing machine and themake a record, operation of the load equilibrium,

when the computing machine is inoperation.

16. In a device of the class described, a

scale, a computing machine and a recording recording out a computationtherein,

operated by a source of power independent,

of the scale-for operating the computing machine and certain elements ofthe record- 'ing machine, means for operating the recording machine andtaking a record therefrom, and means for preventing the taking of arecord during the movement of parts 1 of the computing machine.

18. In a device of the class described, a

scale, acomputing machine and a recording machine,- means controlled bythescalefor operating the computing machine and certain elements of therecording machine,

means for operating the recording machine and taking a record therefrom,and means controlled by both .the scale and the computing machine forpreventing operation of the recording machine to takea record until theoperation of the computing machine is completed'and the scale is inequilibrium.

19. In a device of the class described, a 1

scale, a computing machine and a recording machine, means controlled bythe scale for operating the computing machine. and certain elements ofthe recording machine,

means for operating the recording machine a and taking a recordtherefrom, and means I "for preventing the operation of said recordtakmg means except when the scale is in position of loaded equilibriumand the computing machine is stationary.

, 20. In a device of the class described, in combination, al-equilibrium machine, a com-- puting machine and a recording machine,an auxiliary source of power, means for applying said power for drivingthe computing machine in accordance with the displacement of theequilibrium machine, means for disconnecting said computing machine fromthe source of power, said means being adapted to engage the recordingmachine with said source of power whereby the said machine is operatedand a record taken. I In a device of the class described, incombinatioman equilibrium machine, a computing machine and a recordingmachine, connections intermediate the computing machine andthefrecording machine whereby the computing machine positions elementsof the recording -machin' e, an auxiliary source of power, means forapplying the auxiliary source of power to drive the computing machine inaccordance with the displacement of the equilibrium machine, clutchmeans for disconnecting the computing machine from'the auxiliary sourceof power and for connecting the driving connections of the recordingmachine withsaid source of power whereby a record is taken from thepositioned elements of the recording machine.

22. In a device of the class described, in combination, a computingmachine, a recording machine, driving means therefor, means forconnecting said driving means with the recording machine and forconcurrently disconnecting said driving means from the computingmachine.

23.111 a device of the class described, in combination, a computingmachine, a recording machine, a driving means therefor, a plurality ofkeys for disconnecting said driving means from the computing machine andfor connecting said recording machine.

24. In a device-of the class described, in combinatlon, a computingmachlne, a recorddriving means to the ing machine, a driving meanstherefor, a

plurality of setting elements any one of which upon its operation isadapted to disconnect one of the aforesaid machines and connect theother machine with the driving means, and a member positioneddifferentially upon the operation of said keys to differentiallyposition elements of the recorder whereby a record may be made donotingwhich key has been operated.

25. In a device of the class described, in combination, a scale, acomputing machine having provisions to drive the same in accordance withthe displacement of the scale and adapted to thereby multiply the weightupon the scale by a price per pound and obtain a product representingcomputed cost, a recording machine having type elements therein whichare controlled by the scale'and the computing machine. a plurality ofclerkskeys, type carriers in the recording machine positioned by theoperation of said keys to record the initial of the clerk making thetransaction, a driving means, and means controlled. by the keys forconnecting the recording machine with said driving means.

26. In a device of the class described, an equilibrium machine, acomputing machine, a recording machine, type carriers in said recordingmachine, indicators geared to said type carriers, means for applying anauxiliary source of power to drive the said computing machine inaccordance with the dislacement of the equilibrium machine, meanscontrol-led by the computing machine to position indicators and typecarriers for computed cost, manually operated means for positioningcertain indicators and certain type carriers to correspond with'theprice per pound, a plurality of clerks keys adapted to position certainindicators and certain type carriers to show the initial of theclerkmaking the transaction, and means controlled by said keys fordisconnecting the power means from the computing machine and forthereafter connectingthe recording machine with the power means to takerecords from the positioned type c: rriers.

27. In a computing attachment for scales, an index positioned by thescale, a follow up mechanism having means independent of the motor powerof the scale to cause the same to move and to take positionscorresponding to the position of the index, a computing member, pricesetting devices to variably position the computing member in accordancewith difierent prices per pound, and means for moving the computingmember in accordance with the movement of the follow up mechanismwhereby the member is moved to an extent proportional to the load uponthe scale.

28. In a device of the class described, an equilibrium machine having anindex positioned thereby, a follow up mechanism having means independentof the motive power of the equilibrium machine to cause the follow upmechanism to move and take positions in accordance with said index, acomputing member adapted to move in unison with said follow upmechanism, price setting devices adaptedto vary the inclination of saidcomputing member, and mechanism adapted to be moved by the comput- 1ncontrolled by the follow up mechanism whereby the price per pound ismultiplied by the weight and the computed cost obtained.

29. In a device of the class described, an equilibrium machine, an indexpositioned thereby, a follow up mechanism adapted to move and take aposition of registry with said-index, price setting devices adapted toset up on indicators the price of a commodity per pound, a computingmember and connection elements between said member and the price settingelements whereby said member is varied in inclination according to theprice per pound set up 'on the indicators, an auxiliary source of power,means for applying an auxiliary source of wer to move the followupmechanism to its position of registry with the index and to concurrentlymove the computingmember bodily whereby the before mentioned inclinationimparts movement to certain elements toan extent proportional'to thecomputed cost of a commodity.

30. In a device of the class described, computing means adapted to bepositioned to differential positions in accordance with the weight of anarticle and the .price per pound of said article in combination withmeans for differentially positioning the computing means in accordancewith the price per pound, said means comprising a plurality of member toan extent of movement as p price levers of difi'erent orders, andconnections intermediate said levers, said connections being adapted todrive the higher order levers proportionally upon the movement of thelower order levers and connections intermediate the price setting leverof the highest order and the computing means for differentiallypositioning said computing means.

31. In a device of the class described, a computing means adapted to bepositioned to difi'erential positions in accordance with the Weight ofan article and the price per pound of said article, in combination withmeans for differentially positioning said computing means in accordancewith the price per pound, said means comprising a plurality of pricesetting devices of different orders, gearing intermediate said settingde vices, said gearing being adapted to proportionally move the higherorder device upon the movement of a lower order device and permittingthe lower order device to remain stationary upon the movement of ahigher order device.

32. a device of the class described, in combination, a price settingmeans comprisinga plurality of setting elements, each of said settingelements being adapted to be moved difierentially in accordance with aprice per pound,and means for transferring the movement of one settingdevice to another whereby upon the movement of the setting device of thehighest order a proportional siation of the movements of all devices ofvarious orders is obtained.

33. In a device of the class described, in combination, a price perpound setting and indicating device, comprising an element to bedifi'erentially positioned according to the price per pound, a pluralityof indicators for various denominations as fractions, units and tens ofcents, a plurality of price setting levers of denominationscorresponding to the order of the indicators, a plurality of connectingelements between the indicators and the setting levers whereby upon themovement of a setting lever the. indicator of the corresponding order ismoved to a proportionate extent, connecting elements between the higherand lower order of levers whereby the movement of a lower order lever imparts a proportional movement to all the igher order levers andconnections intermediate the higher order lever and the elements to bedifierentially positioned in accordance with the price per pound forpositioning said element upon the movement of said levers.

84. In a device of the class described, a price setting and indicatingdevice, comprising. in combination, a plurality of indicators, aplurality of price setting levers of difierent denominations, means forpositioning the indicators upon the movement of said levers, a computingelement adapted to be differentially positioned to variable angularpositions to correspond to the prices set up by said levers and tothereafter be moved to efi'ect the computation, and means operable bythe movement of said levers for setting said element to a position whichrepresents the proportional summation of the movement of the settinglevers.

In a device of the class described, a price setting and indicationdevice comprising in combination, a plurality of indicators, a pluralityof price setting levers of different denominations, means forpositioning price per pound indicators by the movement of the settinglevers, said means being adaptcd to permit a movement of one lever to anections intermediate said devices to move the higher order devices uponthe movement of the lower order devices, connections intermediate saiddevices and a computing member, means for positioning the said computingmember to an extent determined by the operation of the equilibriummachine, connections from said computing member to computed costindicators, connections intermediate the computed cost indicators tocomputed cost type carriers, connections intermediate the price perpound indicators and price per pound type carriers, means for taking arecord from the positioned type carriers, and means for preventing thetaking of the record until the type carriers are stationary.

37. In amachine of the class described, in combination, an equilibriummachine, a computing machine and a recording machine, means foroperating the computing machine and limiting the operation in accordancewith the displacement of the equilibrium machine and in accordance withthe price per pound of the con'mlodity weighed, means for operating therecording machine in accordance with the equilibrium machine, aplurality of clerks keys, means for locking said keys againstdepression, said locking means being operable when the computing orequilibrium machine is in motion and when the equilibrium machine is inno load equilibrium whereby the said keys may only be op-

